Gary D. Guo, M.D.
NPI 1144573288ActiveIndividual· Hospitalist· West Covina, CA
Hospitalist (M.D.) with Pih Health Physicians and 2 other groups, practicing in West Covina, California. In 2024 Medicare paid $52,704 for 141 patients, and Part D covered 253 of their prescriptions, 85% of them generic. Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $10.86 in payments in 2025, mostly food and beverage. Lists Emanate Health Inter-Community Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1144573288 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 25, 2012 |
| Last updated in NPPES | Jul 19, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A116079 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 141 |
|---|---|
| Services billed | 562 across 6 procedure codes |
| Paid by Medicare | $52,704 |
Part D prescriptions in 2024
| Prescriptions (claims) | 253 · 261 30-day fills |
|---|---|
| Patients | 111 |
| Total drug cost | $24,251 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Pih Health PhysiciansSanta Fe Springs, CA · 622 clinicians
- Southern California Hospitalist Network Medical Group IncOrange, CA · 77 clinicians
- Arcadia Hospitalist Medical Group IncArcadia, CA · 30 clinicians
Hospital affiliations
- Emanate Health Inter-Community HospitalCovina, CA
- Pih Health Good Samaritan HospitalLos Angeles, CA
- Usc Arcadia HospitalArcadia, CA
Other facilities
- Pih Health Good Samaritan Hospital D/P SnfNursing home · Los Angeles, CA
Industry payments (Open Payments)
- 2025$10.86 · 1 payment from 1 company
- 2024$29.77 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $10.86 | 1 |
What the 2025 payments were for
- Food and Beverage$10.86 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Hospitalist providers in West Covina
- 1245193713
- 1538498878
- 1265099642